I'm nobodies expert on pests but that looks like thrips to me as well. In your first picture on the middle leaf on the left side of the midrib I think you'll see one of the offending bastards.
It's said that spinosad is safe to use but I hate to spray anything other than water on my plants.
I'm also surprised the other plants aren't also infested especially given the amount of damage to the one.
Good luck.